Home / 438,045.90-657,068.85-288,455.10

Finding the Fourth Proportional to 438,045.90, 657,068.85 and 288,455.10

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Solution

The fourth proportional to 438,045.90, 657,068.85 and 288,455.10 is: 432,682.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,045.90 : 657,068.85 = 288,455.10 : x
  2. Step 2: Convert to fraction form
    438,045.90/657,068.85 = 288,455.10/x
  3. Step 3: Cross multiply
    438,045.90x = 657,068.85 × 288,455.10
  4. Step 4: Simplify right side
    438,045.90x = 189,534,860,833.64
  5. Step 5: Solve for x
    x = 189,534,860,833.64/438,045.90
  6. Step 6: Final answer
    x = 432,682.65

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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.