Home / 866,144,638.91-1,298,698,109.93-275,679,826.47

Finding the Fourth Proportional to 866,144,638.91, 1,298,698,109.93 and 275,679,826.47

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Solution

The fourth proportional to 866,144,638.91, 1,298,698,109.93 and 275,679,826.47 is: 413,354,598.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,144,638.91 : 1,298,698,109.93 = 275,679,826.47 : x
  2. Step 2: Convert to fraction form
    866,144,638.91/1,298,698,109.93 = 275,679,826.47/x
  3. Step 3: Cross multiply
    866,144,638.91x = 1,298,698,109.93 × 275,679,826.47
  4. Step 4: Simplify right side
    866,144,638.91x = 358,024,869,583,108,608
  5. Step 5: Solve for x
    x = 358,024,869,583,108,608/866,144,638.91
  6. Step 6: Final answer
    x = 413,354,598.64

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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.