Home / 287,607,615.40-431,411,423.10-239,777,925.40

Finding the Fourth Proportional to 287,607,615.40, 431,411,423.10 and 239,777,925.40

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Solution

The fourth proportional to 287,607,615.40, 431,411,423.10 and 239,777,925.40 is: 359,666,888.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,607,615.40 : 431,411,423.10 = 239,777,925.40 : x
  2. Step 2: Convert to fraction form
    287,607,615.40/431,411,423.10 = 239,777,925.40/x
  3. Step 3: Cross multiply
    287,607,615.40x = 431,411,423.10 × 239,777,925.40
  4. Step 4: Simplify right side
    287,607,615.40x = 103,442,936,024,779,648
  5. Step 5: Solve for x
    x = 103,442,936,024,779,648/287,607,615.40
  6. Step 6: Final answer
    x = 359,666,888.10

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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.