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Finding the Fourth Proportional to 465,787.65, 697,790.58 and 390,368.72

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Solution

The fourth proportional to 465,787.65, 697,790.58 and 390,368.72 is: 584,806.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,787.65 : 697,790.58 = 390,368.72 : x
  2. Step 2: Convert to fraction form
    465,787.65/697,790.58 = 390,368.72/x
  3. Step 3: Cross multiply
    465,787.65x = 697,790.58 × 390,368.72
  4. Step 4: Simplify right side
    465,787.65x = 272,395,612,053.71
  5. Step 5: Solve for x
    x = 272,395,612,053.71/465,787.65
  6. Step 6: Final answer
    x = 584,806.43

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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.