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Finding the Fourth Proportional to 487,706.24, 673,053.76 and 286,500.48

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Solution

The fourth proportional to 487,706.24, 673,053.76 and 286,500.48 is: 395,381.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,706.24 : 673,053.76 = 286,500.48 : x
  2. Step 2: Convert to fraction form
    487,706.24/673,053.76 = 286,500.48/x
  3. Step 3: Cross multiply
    487,706.24x = 673,053.76 × 286,500.48
  4. Step 4: Simplify right side
    487,706.24x = 192,830,225,305.81
  5. Step 5: Solve for x
    x = 192,830,225,305.81/487,706.24
  6. Step 6: Final answer
    x = 395,381.91

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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.