Home / 753,709,145.60-1,130,601,043.20-390,912,089.60

Finding the Fourth Proportional to 753,709,145.60, 1,130,601,043.20 and 390,912,089.60

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Solution

The fourth proportional to 753,709,145.60, 1,130,601,043.20 and 390,912,089.60 is: 586,387,492.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,709,145.60 : 1,130,601,043.20 = 390,912,089.60 : x
  2. Step 2: Convert to fraction form
    753,709,145.60/1,130,601,043.20 = 390,912,089.60/x
  3. Step 3: Cross multiply
    753,709,145.60x = 1,130,601,043.20 × 390,912,089.60
  4. Step 4: Simplify right side
    753,709,145.60x = 441,965,616,301,251,904
  5. Step 5: Solve for x
    x = 441,965,616,301,251,904/753,709,145.60
  6. Step 6: Final answer
    x = 586,387,492.95

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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.