Home / 1,071,401.76-1,478,426.80-641,670.88

Finding the Fourth Proportional to 1,071,401.76, 1,478,426.80 and 641,670.88

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Solution

The fourth proportional to 1,071,401.76, 1,478,426.80 and 641,670.88 is: 885,441.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071,401.76 : 1,478,426.80 = 641,670.88 : x
  2. Step 2: Convert to fraction form
    1,071,401.76/1,478,426.80 = 641,670.88/x
  3. Step 3: Cross multiply
    1,071,401.76x = 1,478,426.80 × 641,670.88
  4. Step 4: Simplify right side
    1,071,401.76x = 948,663,425,771.58
  5. Step 5: Solve for x
    x = 948,663,425,771.58/1,071,401.76
  6. Step 6: Final answer
    x = 885,441.35

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1.5x scale

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.