Home / 822,123.02-1,134,214.80-499,715.48

Finding the Fourth Proportional to 822,123.02, 1,134,214.80 and 499,715.48

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Solution

The fourth proportional to 822,123.02, 1,134,214.80 and 499,715.48 is: 689,415.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,123.02 : 1,134,214.80 = 499,715.48 : x
  2. Step 2: Convert to fraction form
    822,123.02/1,134,214.80 = 499,715.48/x
  3. Step 3: Cross multiply
    822,123.02x = 1,134,214.80 × 499,715.48
  4. Step 4: Simplify right side
    822,123.02x = 566,784,687,534.03
  5. Step 5: Solve for x
    x = 566,784,687,534.03/822,123.02
  6. Step 6: Final answer
    x = 689,415.91

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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.