Home / 426,341,521-639,847,105.50-219,071,559.40

Finding the Fourth Proportional to 426,341,521, 639,847,105.50 and 219,071,559.40

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Solution

The fourth proportional to 426,341,521, 639,847,105.50 and 219,071,559.40 is: 328,779,385.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,341,521 : 639,847,105.50 = 219,071,559.40 : x
  2. Step 2: Convert to fraction form
    426,341,521/639,847,105.50 = 219,071,559.40/x
  3. Step 3: Cross multiply
    426,341,521x = 639,847,105.50 × 219,071,559.40
  4. Step 4: Simplify right side
    426,341,521x = 140,172,303,179,461,328
  5. Step 5: Solve for x
    x = 140,172,303,179,461,328/426,341,521
  6. Step 6: Final answer
    x = 328,779,385.25

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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.