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Finding the Fourth Proportional to 710,309.32, 980,256.66 and 408,503.56

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Solution

The fourth proportional to 710,309.32, 980,256.66 and 408,503.56 is: 563,752.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,309.32 : 980,256.66 = 408,503.56 : x
  2. Step 2: Convert to fraction form
    710,309.32/980,256.66 = 408,503.56/x
  3. Step 3: Cross multiply
    710,309.32x = 980,256.66 × 408,503.56
  4. Step 4: Simplify right side
    710,309.32x = 400,438,335,323.71
  5. Step 5: Solve for x
    x = 400,438,335,323.71/710,309.32
  6. Step 6: Final answer
    x = 563,752.05

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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.