Home / 860,001.40-1,290,002.10-544,814.20

Finding the Fourth Proportional to 860,001.40, 1,290,002.10 and 544,814.20

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Solution

The fourth proportional to 860,001.40, 1,290,002.10 and 544,814.20 is: 817,221.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,001.40 : 1,290,002.10 = 544,814.20 : x
  2. Step 2: Convert to fraction form
    860,001.40/1,290,002.10 = 544,814.20/x
  3. Step 3: Cross multiply
    860,001.40x = 1,290,002.10 × 544,814.20
  4. Step 4: Simplify right side
    860,001.40x = 702,811,462,109.82
  5. Step 5: Solve for x
    x = 702,811,462,109.82/860,001.40
  6. Step 6: Final answer
    x = 817,221.30

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1.5x scale

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.