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Finding the Fourth Proportional to 580,612.40, 869,752.20 and 403,319.60

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Solution

The fourth proportional to 580,612.40, 869,752.20 and 403,319.60 is: 604,169.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,612.40 : 869,752.20 = 403,319.60 : x
  2. Step 2: Convert to fraction form
    580,612.40/869,752.20 = 403,319.60/x
  3. Step 3: Cross multiply
    580,612.40x = 869,752.20 × 403,319.60
  4. Step 4: Simplify right side
    580,612.40x = 350,788,109,403.12
  5. Step 5: Solve for x
    x = 350,788,109,403.12/580,612.40
  6. Step 6: Final answer
    x = 604,169.17

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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.