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Finding the Fourth Proportional to 630,973.48, 870,731.58 and 359,035.24

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Solution

The fourth proportional to 630,973.48, 870,731.58 and 359,035.24 is: 495,461.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,973.48 : 870,731.58 = 359,035.24 : x
  2. Step 2: Convert to fraction form
    630,973.48/870,731.58 = 359,035.24/x
  3. Step 3: Cross multiply
    630,973.48x = 870,731.58 × 359,035.24
  4. Step 4: Simplify right side
    630,973.48x = 312,623,321,800.88
  5. Step 5: Solve for x
    x = 312,623,321,800.88/630,973.48
  6. Step 6: Final answer
    x = 495,461.90

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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.