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Finding the Fourth Proportional to 562,643.28, 776,456.28 and 308,018.16

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Solution

The fourth proportional to 562,643.28, 776,456.28 and 308,018.16 is: 425,069.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,643.28 : 776,456.28 = 308,018.16 : x
  2. Step 2: Convert to fraction form
    562,643.28/776,456.28 = 308,018.16/x
  3. Step 3: Cross multiply
    562,643.28x = 776,456.28 × 308,018.16
  4. Step 4: Simplify right side
    562,643.28x = 239,162,634,686.05
  5. Step 5: Solve for x
    x = 239,162,634,686.05/562,643.28
  6. Step 6: Final answer
    x = 425,069.74

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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.