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Finding the Fourth Proportional to 501,689.61, 692,332.13 and 286,834.19

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Solution

The fourth proportional to 501,689.61, 692,332.13 and 286,834.19 is: 395,831.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,689.61 : 692,332.13 = 286,834.19 : x
  2. Step 2: Convert to fraction form
    501,689.61/692,332.13 = 286,834.19/x
  3. Step 3: Cross multiply
    501,689.61x = 692,332.13 × 286,834.19
  4. Step 4: Simplify right side
    501,689.61x = 198,584,522,974.95
  5. Step 5: Solve for x
    x = 198,584,522,974.95/501,689.61
  6. Step 6: Final answer
    x = 395,831.44

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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.