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Finding the Fourth Proportional to 562,420.80, 776,140.56 and 307,771.92

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Solution

The fourth proportional to 562,420.80, 776,140.56 and 307,771.92 is: 424,725.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,420.80 : 776,140.56 = 307,771.92 : x
  2. Step 2: Convert to fraction form
    562,420.80/776,140.56 = 307,771.92/x
  3. Step 3: Cross multiply
    562,420.80x = 776,140.56 × 307,771.92
  4. Step 4: Simplify right side
    562,420.80x = 238,874,270,341.08
  5. Step 5: Solve for x
    x = 238,874,270,341.08/562,420.80
  6. Step 6: Final answer
    x = 424,725.17

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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.