Home / 1,139,730.60-1,572,334.02-686,764.20

Finding the Fourth Proportional to 1,139,730.60, 1,572,334.02 and 686,764.20

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Solution

The fourth proportional to 1,139,730.60, 1,572,334.02 and 686,764.20 is: 947,436.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,730.60 : 1,572,334.02 = 686,764.20 : x
  2. Step 2: Convert to fraction form
    1,139,730.60/1,572,334.02 = 686,764.20/x
  3. Step 3: Cross multiply
    1,139,730.60x = 1,572,334.02 × 686,764.20
  4. Step 4: Simplify right side
    1,139,730.60x = 1,079,822,715,378.08
  5. Step 5: Solve for x
    x = 1,079,822,715,378.08/1,139,730.60
  6. Step 6: Final answer
    x = 947,436.80

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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.