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Finding the Fourth Proportional to 670,809.60, 1,007,380.80 and 355,881.60

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Solution

The fourth proportional to 670,809.60, 1,007,380.80 and 355,881.60 is: 534,441.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,809.60 : 1,007,380.80 = 355,881.60 : x
  2. Step 2: Convert to fraction form
    670,809.60/1,007,380.80 = 355,881.60/x
  3. Step 3: Cross multiply
    670,809.60x = 1,007,380.80 × 355,881.60
  4. Step 4: Simplify right side
    670,809.60x = 358,508,290,913.28
  5. Step 5: Solve for x
    x = 358,508,290,913.28/670,809.60
  6. Step 6: Final answer
    x = 534,441.20

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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.