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Finding the Fourth Proportional to 700,412.16, 966,572.68 and 398,606.16

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Solution

The fourth proportional to 700,412.16, 966,572.68 and 398,606.16 is: 550,078.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,412.16 : 966,572.68 = 398,606.16 : x
  2. Step 2: Convert to fraction form
    700,412.16/966,572.68 = 398,606.16/x
  3. Step 3: Cross multiply
    700,412.16x = 966,572.68 × 398,606.16
  4. Step 4: Simplify right side
    700,412.16x = 385,281,824,335.71
  5. Step 5: Solve for x
    x = 385,281,824,335.71/700,412.16
  6. Step 6: Final answer
    x = 550,078.72

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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.