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Finding the Fourth Proportional to 570,914.19, 787,862.19 and 309,270.10

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Solution

The fourth proportional to 570,914.19, 787,862.19 and 309,270.10 is: 426,793.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,914.19 : 787,862.19 = 309,270.10 : x
  2. Step 2: Convert to fraction form
    570,914.19/787,862.19 = 309,270.10/x
  3. Step 3: Cross multiply
    570,914.19x = 787,862.19 × 309,270.10
  4. Step 4: Simplify right side
    570,914.19x = 243,662,218,287.52
  5. Step 5: Solve for x
    x = 243,662,218,287.52/570,914.19
  6. Step 6: Final answer
    x = 426,793.07

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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.