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Finding the Fourth Proportional to 570,995.25, 787,999.28 and 316,346.45

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Solution

The fourth proportional to 570,995.25, 787,999.28 and 316,346.45 is: 436,572.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,995.25 : 787,999.28 = 316,346.45 : x
  2. Step 2: Convert to fraction form
    570,995.25/787,999.28 = 316,346.45/x
  3. Step 3: Cross multiply
    570,995.25x = 787,999.28 × 316,346.45
  4. Step 4: Simplify right side
    570,995.25x = 249,280,769,308.83
  5. Step 5: Solve for x
    x = 249,280,769,308.83/570,995.25
  6. Step 6: Final answer
    x = 436,572.40

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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.