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Finding the Fourth Proportional to 7,552,180.80, 10,421,978.40 and 4,114,411.20

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Solution

The fourth proportional to 7,552,180.80, 10,421,978.40 and 4,114,411.20 is: 5,677,870.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,552,180.80 : 10,421,978.40 = 4,114,411.20 : x
  2. Step 2: Convert to fraction form
    7,552,180.80/10,421,978.40 = 4,114,411.20/x
  3. Step 3: Cross multiply
    7,552,180.80x = 10,421,978.40 × 4,114,411.20
  4. Step 4: Simplify right side
    7,552,180.80x = 42,880,304,655,118.09
  5. Step 5: Solve for x
    x = 42,880,304,655,118.09/7,552,180.80
  6. Step 6: Final answer
    x = 5,677,870.51

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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.