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Finding the Fourth Proportional to 877,391.76, 1,210,801.04 and 474,983.76

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Solution

The fourth proportional to 877,391.76, 1,210,801.04 and 474,983.76 is: 655,477.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,391.76 : 1,210,801.04 = 474,983.76 : x
  2. Step 2: Convert to fraction form
    877,391.76/1,210,801.04 = 474,983.76/x
  3. Step 3: Cross multiply
    877,391.76x = 1,210,801.04 × 474,983.76
  4. Step 4: Simplify right side
    877,391.76x = 575,110,830,591.11
  5. Step 5: Solve for x
    x = 575,110,830,591.11/877,391.76
  6. Step 6: Final answer
    x = 655,477.81

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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.