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Finding the Fourth Proportional to 810,000.40, 1,215,000.60 and 750,951.40

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Solution

The fourth proportional to 810,000.40, 1,215,000.60 and 750,951.40 is: 1,126,427.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,000.40 : 1,215,000.60 = 750,951.40 : x
  2. Step 2: Convert to fraction form
    810,000.40/1,215,000.60 = 750,951.40/x
  3. Step 3: Cross multiply
    810,000.40x = 1,215,000.60 × 750,951.40
  4. Step 4: Simplify right side
    810,000.40x = 912,406,401,570.84
  5. Step 5: Solve for x
    x = 912,406,401,570.84/810,000.40
  6. Step 6: Final answer
    x = 1,126,427.10

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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.