Home / 487,643.40-672,916.08-272,746.20

Finding the Fourth Proportional to 487,643.40, 672,916.08 and 272,746.20

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Solution

The fourth proportional to 487,643.40, 672,916.08 and 272,746.20 is: 376,371.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,643.40 : 672,916.08 = 272,746.20 : x
  2. Step 2: Convert to fraction form
    487,643.40/672,916.08 = 272,746.20/x
  3. Step 3: Cross multiply
    487,643.40x = 672,916.08 × 272,746.20
  4. Step 4: Simplify right side
    487,643.40x = 183,535,303,738.90
  5. Step 5: Solve for x
    x = 183,535,303,738.90/487,643.40
  6. Step 6: Final answer
    x = 376,371.96

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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.