Home / 990,087.60-1,484,785.80-516,615.60

Finding the Fourth Proportional to 990,087.60, 1,484,785.80 and 516,615.60

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Solution

The fourth proportional to 990,087.60, 1,484,785.80 and 516,615.60 is: 774,743.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,087.60 : 1,484,785.80 = 516,615.60 : x
  2. Step 2: Convert to fraction form
    990,087.60/1,484,785.80 = 516,615.60/x
  3. Step 3: Cross multiply
    990,087.60x = 1,484,785.80 × 516,615.60
  4. Step 4: Simplify right side
    990,087.60x = 767,063,506,938.48
  5. Step 5: Solve for x
    x = 767,063,506,938.48/990,087.60
  6. Step 6: Final answer
    x = 774,743.07

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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.