Home / 532,239,979.20-798,359,968.80-388,912,747.20

Finding the Fourth Proportional to 532,239,979.20, 798,359,968.80 and 388,912,747.20

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Solution

The fourth proportional to 532,239,979.20, 798,359,968.80 and 388,912,747.20 is: 583,369,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,239,979.20 : 798,359,968.80 = 388,912,747.20 : x
  2. Step 2: Convert to fraction form
    532,239,979.20/798,359,968.80 = 388,912,747.20/x
  3. Step 3: Cross multiply
    532,239,979.20x = 798,359,968.80 × 388,912,747.20
  4. Step 4: Simplify right side
    532,239,979.20x = 310,492,368,720,514,240
  5. Step 5: Solve for x
    x = 310,492,368,720,514,240/532,239,979.20
  6. Step 6: Final answer
    x = 583,369,120.80

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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.