Home / 711,281.60-1,065,194.40-378,123.20

Finding the Fourth Proportional to 711,281.60, 1,065,194.40 and 378,123.20

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Solution

The fourth proportional to 711,281.60, 1,065,194.40 and 378,123.20 is: 566,266.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,281.60 : 1,065,194.40 = 378,123.20 : x
  2. Step 2: Convert to fraction form
    711,281.60/1,065,194.40 = 378,123.20/x
  3. Step 3: Cross multiply
    711,281.60x = 1,065,194.40 × 378,123.20
  4. Step 4: Simplify right side
    711,281.60x = 402,774,715,150.08
  5. Step 5: Solve for x
    x = 402,774,715,150.08/711,281.60
  6. Step 6: Final answer
    x = 566,266.18

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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.