Home / 402,947,405.60-604,421,108.40-130,345,728.80

Finding the Fourth Proportional to 402,947,405.60, 604,421,108.40 and 130,345,728.80

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Solution

The fourth proportional to 402,947,405.60, 604,421,108.40 and 130,345,728.80 is: 195,518,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,947,405.60 : 604,421,108.40 = 130,345,728.80 : x
  2. Step 2: Convert to fraction form
    402,947,405.60/604,421,108.40 = 130,345,728.80/x
  3. Step 3: Cross multiply
    402,947,405.60x = 604,421,108.40 × 130,345,728.80
  4. Step 4: Simplify right side
    402,947,405.60x = 78,783,709,876,501,792
  5. Step 5: Solve for x
    x = 78,783,709,876,501,792/402,947,405.60
  6. Step 6: Final answer
    x = 195,518,593.20

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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.