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Finding the Fourth Proportional to 775,312.80, 1,163,007.60 and 402,064.80

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Solution

The fourth proportional to 775,312.80, 1,163,007.60 and 402,064.80 is: 603,117.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,312.80 : 1,163,007.60 = 402,064.80 : x
  2. Step 2: Convert to fraction form
    775,312.80/1,163,007.60 = 402,064.80/x
  3. Step 3: Cross multiply
    775,312.80x = 1,163,007.60 × 402,064.80
  4. Step 4: Simplify right side
    775,312.80x = 467,604,418,092.48
  5. Step 5: Solve for x
    x = 467,604,418,092.48/775,312.80
  6. Step 6: Final answer
    x = 603,117.11

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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.