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Finding the Fourth Proportional to 887,643.10, 1,330,808.55 and 488,734.30

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Solution

The fourth proportional to 887,643.10, 1,330,808.55 and 488,734.30 is: 732,740.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,643.10 : 1,330,808.55 = 488,734.30 : x
  2. Step 2: Convert to fraction form
    887,643.10/1,330,808.55 = 488,734.30/x
  3. Step 3: Cross multiply
    887,643.10x = 1,330,808.55 × 488,734.30
  4. Step 4: Simplify right side
    887,643.10x = 650,411,785,118.27
  5. Step 5: Solve for x
    x = 650,411,785,118.27/887,643.10
  6. Step 6: Final answer
    x = 732,740.20

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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.