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Finding the Fourth Proportional to 522,724.80, 782,920.80 and 403,460.40

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Solution

The fourth proportional to 522,724.80, 782,920.80 and 403,460.40 is: 604,290.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,724.80 : 782,920.80 = 403,460.40 : x
  2. Step 2: Convert to fraction form
    522,724.80/782,920.80 = 403,460.40/x
  3. Step 3: Cross multiply
    522,724.80x = 782,920.80 × 403,460.40
  4. Step 4: Simplify right side
    522,724.80x = 315,877,539,136.32
  5. Step 5: Solve for x
    x = 315,877,539,136.32/522,724.80
  6. Step 6: Final answer
    x = 604,290.32

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1.5x scale

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.