Home / 646,406,648,013.72-891,893,221,602.66-385,933,755,215.78

Finding the Fourth Proportional to 646,406,648,013.72, 891,893,221,602.66 and 385,933,755,215.78

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Solution

The fourth proportional to 646,406,648,013.72, 891,893,221,602.66 and 385,933,755,215.78 is: 532,500,247,827.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,406,648,013.72 : 891,893,221,602.66 = 385,933,755,215.78 : x
  2. Step 2: Convert to fraction form
    646,406,648,013.72/891,893,221,602.66 = 385,933,755,215.78/x
  3. Step 3: Cross multiply
    646,406,648,013.72x = 891,893,221,602.66 × 385,933,755,215.78
  4. Step 4: Simplify right side
    646,406,648,013.72x = 344,211,700,264,614,458,556,416
  5. Step 5: Solve for x
    x = 344,211,700,264,614,458,556,416/646,406,648,013.72
  6. Step 6: Final answer
    x = 532,500,247,827.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.