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Finding the Fourth Proportional to 615,386.94, 921,292.71 and 358,436.04

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Solution

The fourth proportional to 615,386.94, 921,292.71 and 358,436.04 is: 536,612.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,386.94 : 921,292.71 = 358,436.04 : x
  2. Step 2: Convert to fraction form
    615,386.94/921,292.71 = 358,436.04/x
  3. Step 3: Cross multiply
    615,386.94x = 921,292.71 × 358,436.04
  4. Step 4: Simplify right side
    615,386.94x = 330,224,510,653.27
  5. Step 5: Solve for x
    x = 330,224,510,653.27/615,386.94
  6. Step 6: Final answer
    x = 536,612.80

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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.