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Finding the Fourth Proportional to 649,395.60, 895,585.68 and 407,700.70

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Solution

The fourth proportional to 649,395.60, 895,585.68 and 407,700.70 is: 562,262.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,395.60 : 895,585.68 = 407,700.70 : x
  2. Step 2: Convert to fraction form
    649,395.60/895,585.68 = 407,700.70/x
  3. Step 3: Cross multiply
    649,395.60x = 895,585.68 × 407,700.70
  4. Step 4: Simplify right side
    649,395.60x = 365,130,908,645.98
  5. Step 5: Solve for x
    x = 365,130,908,645.98/649,395.60
  6. Step 6: Final answer
    x = 562,262.68

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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.