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Finding the Fourth Proportional to 879,482.30, 1,319,223.45 and 771,007.10

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Solution

The fourth proportional to 879,482.30, 1,319,223.45 and 771,007.10 is: 1,156,510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,482.30 : 1,319,223.45 = 771,007.10 : x
  2. Step 2: Convert to fraction form
    879,482.30/1,319,223.45 = 771,007.10/x
  3. Step 3: Cross multiply
    879,482.30x = 1,319,223.45 × 771,007.10
  4. Step 4: Simplify right side
    879,482.30x = 1,017,130,646,436.49
  5. Step 5: Solve for x
    x = 1,017,130,646,436.49/879,482.30
  6. Step 6: Final answer
    x = 1,156,510.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.