Home / 900,123.60-1,349,969.40-520,222.80

Finding the Fourth Proportional to 900,123.60, 1,349,969.40 and 520,222.80

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Solution

The fourth proportional to 900,123.60, 1,349,969.40 and 520,222.80 is: 780,209.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,123.60 : 1,349,969.40 = 520,222.80 : x
  2. Step 2: Convert to fraction form
    900,123.60/1,349,969.40 = 520,222.80/x
  3. Step 3: Cross multiply
    900,123.60x = 1,349,969.40 × 520,222.80
  4. Step 4: Simplify right side
    900,123.60x = 702,284,861,182.32
  5. Step 5: Solve for x
    x = 702,284,861,182.32/900,123.60
  6. Step 6: Final answer
    x = 780,209.36

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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.