Home / 712,932,138.80-1,069,398,208.20-687,104,106.20

Finding the Fourth Proportional to 712,932,138.80, 1,069,398,208.20 and 687,104,106.20

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Solution

The fourth proportional to 712,932,138.80, 1,069,398,208.20 and 687,104,106.20 is: 1,030,656,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,932,138.80 : 1,069,398,208.20 = 687,104,106.20 : x
  2. Step 2: Convert to fraction form
    712,932,138.80/1,069,398,208.20 = 687,104,106.20/x
  3. Step 3: Cross multiply
    712,932,138.80x = 1,069,398,208.20 × 687,104,106.20
  4. Step 4: Simplify right side
    712,932,138.80x = 734,787,900,017,142,656
  5. Step 5: Solve for x
    x = 734,787,900,017,142,656/712,932,138.80
  6. Step 6: Final answer
    x = 1,030,656,159.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.