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Finding the Fourth Proportional to 710,152.65, 980,003.31 and 387,862.76

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Solution

The fourth proportional to 710,152.65, 980,003.31 and 387,862.76 is: 535,246.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,152.65 : 980,003.31 = 387,862.76 : x
  2. Step 2: Convert to fraction form
    710,152.65/980,003.31 = 387,862.76/x
  3. Step 3: Cross multiply
    710,152.65x = 980,003.31 × 387,862.76
  4. Step 4: Simplify right side
    710,152.65x = 380,106,789,621.26
  5. Step 5: Solve for x
    x = 380,106,789,621.26/710,152.65
  6. Step 6: Final answer
    x = 535,246.60

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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.