Home / 871,341.30-1,305,119.22-421,117.95

Finding the Fourth Proportional to 871,341.30, 1,305,119.22 and 421,117.95

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Solution

The fourth proportional to 871,341.30, 1,305,119.22 and 421,117.95 is: 630,762.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,341.30 : 1,305,119.22 = 421,117.95 : x
  2. Step 2: Convert to fraction form
    871,341.30/1,305,119.22 = 421,117.95/x
  3. Step 3: Cross multiply
    871,341.30x = 1,305,119.22 × 421,117.95
  4. Step 4: Simplify right side
    871,341.30x = 549,609,130,432.00
  5. Step 5: Solve for x
    x = 549,609,130,432.00/871,341.30
  6. Step 6: Final answer
    x = 630,762.17

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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.