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Finding the Fourth Proportional to 887,639.10, 1,330,802.55 and 488,730.30

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Solution

The fourth proportional to 887,639.10, 1,330,802.55 and 488,730.30 is: 732,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,639.10 : 1,330,802.55 = 488,730.30 : x
  2. Step 2: Convert to fraction form
    887,639.10/1,330,802.55 = 488,730.30/x
  3. Step 3: Cross multiply
    887,639.10x = 1,330,802.55 × 488,730.30
  4. Step 4: Simplify right side
    887,639.10x = 650,403,529,502.27
  5. Step 5: Solve for x
    x = 650,403,529,502.27/887,639.10
  6. Step 6: Final answer
    x = 732,734.20

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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.