Home / 712,731.16-983,534.16-390,442.96

Finding the Fourth Proportional to 712,731.16, 983,534.16 and 390,442.96

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Solution

The fourth proportional to 712,731.16, 983,534.16 and 390,442.96 is: 538,792.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,731.16 : 983,534.16 = 390,442.96 : x
  2. Step 2: Convert to fraction form
    712,731.16/983,534.16 = 390,442.96/x
  3. Step 3: Cross multiply
    712,731.16x = 983,534.16 × 390,442.96
  4. Step 4: Simplify right side
    712,731.16x = 384,013,988,691.51
  5. Step 5: Solve for x
    x = 384,013,988,691.51/712,731.16
  6. Step 6: Final answer
    x = 538,792.20

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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.