Home / 386,644,592.80-579,966,889.20-315,865,712.80

Finding the Fourth Proportional to 386,644,592.80, 579,966,889.20 and 315,865,712.80

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Solution

The fourth proportional to 386,644,592.80, 579,966,889.20 and 315,865,712.80 is: 473,798,569.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,644,592.80 : 579,966,889.20 = 315,865,712.80 : x
  2. Step 2: Convert to fraction form
    386,644,592.80/579,966,889.20 = 315,865,712.80/x
  3. Step 3: Cross multiply
    386,644,592.80x = 579,966,889.20 × 315,865,712.80
  4. Step 4: Simplify right side
    386,644,592.80x = 183,191,654,857,556,640
  5. Step 5: Solve for x
    x = 183,191,654,857,556,640/386,644,592.80
  6. Step 6: Final answer
    x = 473,798,569.20

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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.