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Finding the Fourth Proportional to 702,416.40, 1,052,069.40 and 578,000.40

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Solution

The fourth proportional to 702,416.40, 1,052,069.40 and 578,000.40 is: 865,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,416.40 : 1,052,069.40 = 578,000.40 : x
  2. Step 2: Convert to fraction form
    702,416.40/1,052,069.40 = 578,000.40/x
  3. Step 3: Cross multiply
    702,416.40x = 1,052,069.40 × 578,000.40
  4. Step 4: Simplify right side
    702,416.40x = 608,096,534,027.76
  5. Step 5: Solve for x
    x = 608,096,534,027.76/702,416.40
  6. Step 6: Final answer
    x = 865,720.87

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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.