Home / 389,391,773,031.03-537,363,801,901.35-215,779,812,461.74

Finding the Fourth Proportional to 389,391,773,031.03, 537,363,801,901.35 and 215,779,812,461.74

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Solution

The fourth proportional to 389,391,773,031.03, 537,363,801,901.35 and 215,779,812,461.74 is: 297,777,889,592.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,391,773,031.03 : 537,363,801,901.35 = 215,779,812,461.74 : x
  2. Step 2: Convert to fraction form
    389,391,773,031.03/537,363,801,901.35 = 215,779,812,461.74/x
  3. Step 3: Cross multiply
    389,391,773,031.03x = 537,363,801,901.35 × 215,779,812,461.74
  4. Step 4: Simplify right side
    389,391,773,031.03x = 115,952,260,398,000,889,659,392
  5. Step 5: Solve for x
    x = 115,952,260,398,000,889,659,392/389,391,773,031.03
  6. Step 6: Final answer
    x = 297,777,889,592.86

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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.