Home / 712,302.47-982,973.81-390,006.71

Finding the Fourth Proportional to 712,302.47, 982,973.81 and 390,006.71

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Solution

The fourth proportional to 712,302.47, 982,973.81 and 390,006.71 is: 538,207.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,302.47 : 982,973.81 = 390,006.71 : x
  2. Step 2: Convert to fraction form
    712,302.47/982,973.81 = 390,006.71/x
  3. Step 3: Cross multiply
    712,302.47x = 982,973.81 × 390,006.71
  4. Step 4: Simplify right side
    712,302.47x = 383,366,377,714.41
  5. Step 5: Solve for x
    x = 383,366,377,714.41/712,302.47
  6. Step 6: Final answer
    x = 538,207.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.