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Finding the Fourth Proportional to 562,570.40, 776,308.20 and 320,863.28

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Solution

The fourth proportional to 562,570.40, 776,308.20 and 320,863.28 is: 442,769.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,570.40 : 776,308.20 = 320,863.28 : x
  2. Step 2: Convert to fraction form
    562,570.40/776,308.20 = 320,863.28/x
  3. Step 3: Cross multiply
    562,570.40x = 776,308.20 × 320,863.28
  4. Step 4: Simplify right side
    562,570.40x = 249,088,795,342.90
  5. Step 5: Solve for x
    x = 249,088,795,342.90/562,570.40
  6. Step 6: Final answer
    x = 442,769.11

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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.