Home / 487,637.40-672,907.80-272,740.20

Finding the Fourth Proportional to 487,637.40, 672,907.80 and 272,740.20

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Solution

The fourth proportional to 487,637.40, 672,907.80 and 272,740.20 is: 376,363.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,637.40 : 672,907.80 = 272,740.20 : x
  2. Step 2: Convert to fraction form
    487,637.40/672,907.80 = 272,740.20/x
  3. Step 3: Cross multiply
    487,637.40x = 672,907.80 × 272,740.20
  4. Step 4: Simplify right side
    487,637.40x = 183,529,007,953.56
  5. Step 5: Solve for x
    x = 183,529,007,953.56/487,637.40
  6. Step 6: Final answer
    x = 376,363.68

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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.