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Finding the Fourth Proportional to 403,522.76, 600,520.57 and 390,068.60

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Solution

The fourth proportional to 403,522.76, 600,520.57 and 390,068.60 is: 580,498.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,522.76 : 600,520.57 = 390,068.60 : x
  2. Step 2: Convert to fraction form
    403,522.76/600,520.57 = 390,068.60/x
  3. Step 3: Cross multiply
    403,522.76x = 600,520.57 × 390,068.60
  4. Step 4: Simplify right side
    403,522.76x = 234,244,218,011.10
  5. Step 5: Solve for x
    x = 234,244,218,011.10/403,522.76
  6. Step 6: Final answer
    x = 580,498.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.