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Finding the Fourth Proportional to 554,468.40, 831,702.60 and 402,909.30

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Solution

The fourth proportional to 554,468.40, 831,702.60 and 402,909.30 is: 604,363.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,468.40 : 831,702.60 = 402,909.30 : x
  2. Step 2: Convert to fraction form
    554,468.40/831,702.60 = 402,909.30/x
  3. Step 3: Cross multiply
    554,468.40x = 831,702.60 × 402,909.30
  4. Step 4: Simplify right side
    554,468.40x = 335,100,712,374.18
  5. Step 5: Solve for x
    x = 335,100,712,374.18/554,468.40
  6. Step 6: Final answer
    x = 604,363.95

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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.