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Finding the Fourth Proportional to 615,931.26, 849,692.79 and 386,375.10

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Solution

The fourth proportional to 615,931.26, 849,692.79 and 386,375.10 is: 533,014.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,931.26 : 849,692.79 = 386,375.10 : x
  2. Step 2: Convert to fraction form
    615,931.26/849,692.79 = 386,375.10/x
  3. Step 3: Cross multiply
    615,931.26x = 849,692.79 × 386,375.10
  4. Step 4: Simplify right side
    615,931.26x = 328,300,136,705.53
  5. Step 5: Solve for x
    x = 328,300,136,705.53/615,931.26
  6. Step 6: Final answer
    x = 533,014.25

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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.