Home / 718,587.70-1,077,881.55-660,526.90

Finding the Fourth Proportional to 718,587.70, 1,077,881.55 and 660,526.90

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Solution

The fourth proportional to 718,587.70, 1,077,881.55 and 660,526.90 is: 990,790.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,587.70 : 1,077,881.55 = 660,526.90 : x
  2. Step 2: Convert to fraction form
    718,587.70/1,077,881.55 = 660,526.90/x
  3. Step 3: Cross multiply
    718,587.70x = 1,077,881.55 × 660,526.90
  4. Step 4: Simplify right side
    718,587.70x = 711,969,758,788.70
  5. Step 5: Solve for x
    x = 711,969,758,788.70/718,587.70
  6. Step 6: Final answer
    x = 990,790.35

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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.