Home / 561,132.12-772,731.38-487,510.51

Finding the Fourth Proportional to 561,132.12, 772,731.38 and 487,510.51

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Solution

The fourth proportional to 561,132.12, 772,731.38 and 487,510.51 is: 671,347.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,132.12 : 772,731.38 = 487,510.51 : x
  2. Step 2: Convert to fraction form
    561,132.12/772,731.38 = 487,510.51/x
  3. Step 3: Cross multiply
    561,132.12x = 772,731.38 × 487,510.51
  4. Step 4: Simplify right side
    561,132.12x = 376,714,669,156.80
  5. Step 5: Solve for x
    x = 376,714,669,156.80/561,132.12
  6. Step 6: Final answer
    x = 671,347.54

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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.