Home / 753,893,999.40-1,130,840,999.10-509,005,986.60

Finding the Fourth Proportional to 753,893,999.40, 1,130,840,999.10 and 509,005,986.60

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Solution

The fourth proportional to 753,893,999.40, 1,130,840,999.10 and 509,005,986.60 is: 763,508,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,893,999.40 : 1,130,840,999.10 = 509,005,986.60 : x
  2. Step 2: Convert to fraction form
    753,893,999.40/1,130,840,999.10 = 509,005,986.60/x
  3. Step 3: Cross multiply
    753,893,999.40x = 1,130,840,999.10 × 509,005,986.60
  4. Step 4: Simplify right side
    753,893,999.40x = 575,604,838,434,625,216
  5. Step 5: Solve for x
    x = 575,604,838,434,625,216/753,893,999.40
  6. Step 6: Final answer
    x = 763,508,979.90

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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.