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Finding the Fourth Proportional to 630,797.86, 870,470.63 and 358,840.16

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Solution

The fourth proportional to 630,797.86, 870,470.63 and 358,840.16 is: 495,182.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,797.86 : 870,470.63 = 358,840.16 : x
  2. Step 2: Convert to fraction form
    630,797.86/870,470.63 = 358,840.16/x
  3. Step 3: Cross multiply
    630,797.86x = 870,470.63 × 358,840.16
  4. Step 4: Simplify right side
    630,797.86x = 312,359,820,144.50
  5. Step 5: Solve for x
    x = 312,359,820,144.50/630,797.86
  6. Step 6: Final answer
    x = 495,182.12

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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.