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Finding the Fourth Proportional to 660,013.60, 990,020.40 and 435,627.40

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Solution

The fourth proportional to 660,013.60, 990,020.40 and 435,627.40 is: 653,441.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,013.60 : 990,020.40 = 435,627.40 : x
  2. Step 2: Convert to fraction form
    660,013.60/990,020.40 = 435,627.40/x
  3. Step 3: Cross multiply
    660,013.60x = 990,020.40 × 435,627.40
  4. Step 4: Simplify right side
    660,013.60x = 431,280,012,798.96
  5. Step 5: Solve for x
    x = 431,280,012,798.96/660,013.60
  6. Step 6: Final answer
    x = 653,441.10

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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.