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Finding the Fourth Proportional to 630,542.80, 870,114.72 and 358,573.96

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Solution

The fourth proportional to 630,542.80, 870,114.72 and 358,573.96 is: 494,812.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,542.80 : 870,114.72 = 358,573.96 : x
  2. Step 2: Convert to fraction form
    630,542.80/870,114.72 = 358,573.96/x
  3. Step 3: Cross multiply
    630,542.80x = 870,114.72 × 358,573.96
  4. Step 4: Simplify right side
    630,542.80x = 312,000,480,804.69
  5. Step 5: Solve for x
    x = 312,000,480,804.69/630,542.80
  6. Step 6: Final answer
    x = 494,812.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.