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Finding the Fourth Proportional to 900,689.76, 1,241,522.64 and 709,400.16

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Solution

The fourth proportional to 900,689.76, 1,241,522.64 and 709,400.16 is: 977,846.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,689.76 : 1,241,522.64 = 709,400.16 : x
  2. Step 2: Convert to fraction form
    900,689.76/1,241,522.64 = 709,400.16/x
  3. Step 3: Cross multiply
    900,689.76x = 1,241,522.64 × 709,400.16
  4. Step 4: Simplify right side
    900,689.76x = 880,736,359,459.62
  5. Step 5: Solve for x
    x = 880,736,359,459.62/900,689.76
  6. Step 6: Final answer
    x = 977,846.53

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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.