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Finding the Fourth Proportional to 630,440.16, 870,058.92 and 358,593.08

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Solution

The fourth proportional to 630,440.16, 870,058.92 and 358,593.08 is: 494,887.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,440.16 : 870,058.92 = 358,593.08 : x
  2. Step 2: Convert to fraction form
    630,440.16/870,058.92 = 358,593.08/x
  3. Step 3: Cross multiply
    630,440.16x = 870,058.92 × 358,593.08
  4. Step 4: Simplify right side
    630,440.16x = 311,997,107,904.27
  5. Step 5: Solve for x
    x = 311,997,107,904.27/630,440.16
  6. Step 6: Final answer
    x = 494,887.74

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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.