Home / 1,147,428,000.90-1,721,142,001.35-371,630,429.10

Finding the Fourth Proportional to 1,147,428,000.90, 1,721,142,001.35 and 371,630,429.10

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Solution

The fourth proportional to 1,147,428,000.90, 1,721,142,001.35 and 371,630,429.10 is: 557,445,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,428,000.90 : 1,721,142,001.35 = 371,630,429.10 : x
  2. Step 2: Convert to fraction form
    1,147,428,000.90/1,721,142,001.35 = 371,630,429.10/x
  3. Step 3: Cross multiply
    1,147,428,000.90x = 1,721,142,001.35 × 371,630,429.10
  4. Step 4: Simplify right side
    1,147,428,000.90x = 639,628,740,503,733,248
  5. Step 5: Solve for x
    x = 639,628,740,503,733,248/1,147,428,000.90
  6. Step 6: Final answer
    x = 557,445,643.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.