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Finding the Fourth Proportional to 612,006.80, 918,010.20 and 570,016.40

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Solution

The fourth proportional to 612,006.80, 918,010.20 and 570,016.40 is: 855,024.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,006.80 : 918,010.20 = 570,016.40 : x
  2. Step 2: Convert to fraction form
    612,006.80/918,010.20 = 570,016.40/x
  3. Step 3: Cross multiply
    612,006.80x = 918,010.20 × 570,016.40
  4. Step 4: Simplify right side
    612,006.80x = 523,280,869,367.28
  5. Step 5: Solve for x
    x = 523,280,869,367.28/612,006.80
  6. Step 6: Final answer
    x = 855,024.60

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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.