Home / 402,947,385.60-604,421,078.40-130,345,708.80

Finding the Fourth Proportional to 402,947,385.60, 604,421,078.40 and 130,345,708.80

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Solution

The fourth proportional to 402,947,385.60, 604,421,078.40 and 130,345,708.80 is: 195,518,563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,947,385.60 : 604,421,078.40 = 130,345,708.80 : x
  2. Step 2: Convert to fraction form
    402,947,385.60/604,421,078.40 = 130,345,708.80/x
  3. Step 3: Cross multiply
    402,947,385.60x = 604,421,078.40 × 130,345,708.80
  4. Step 4: Simplify right side
    402,947,385.60x = 78,783,693,877,708,368
  5. Step 5: Solve for x
    x = 78,783,693,877,708,368/402,947,385.60
  6. Step 6: Final answer
    x = 195,518,563.20

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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.