Home / 900,728.28-1,241,575.78-709,438.68

Finding the Fourth Proportional to 900,728.28, 1,241,575.78 and 709,438.68

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Solution

The fourth proportional to 900,728.28, 1,241,575.78 and 709,438.68 is: 977,899.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,728.28 : 1,241,575.78 = 709,438.68 : x
  2. Step 2: Convert to fraction form
    900,728.28/1,241,575.78 = 709,438.68/x
  3. Step 3: Cross multiply
    900,728.28x = 1,241,575.78 × 709,438.68
  4. Step 4: Simplify right side
    900,728.28x = 880,821,882,483.17
  5. Step 5: Solve for x
    x = 880,821,882,483.17/900,728.28
  6. Step 6: Final answer
    x = 977,899.66

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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.