Home / 1,223,311.64-1,688,123.13-679,482.15

Finding the Fourth Proportional to 1,223,311.64, 1,688,123.13 and 679,482.15

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Solution

The fourth proportional to 1,223,311.64, 1,688,123.13 and 679,482.15 is: 937,659.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,311.64 : 1,688,123.13 = 679,482.15 : x
  2. Step 2: Convert to fraction form
    1,223,311.64/1,688,123.13 = 679,482.15/x
  3. Step 3: Cross multiply
    1,223,311.64x = 1,688,123.13 × 679,482.15
  4. Step 4: Simplify right side
    1,223,311.64x = 1,147,049,533,837.13
  5. Step 5: Solve for x
    x = 1,147,049,533,837.13/1,223,311.64
  6. Step 6: Final answer
    x = 937,659.30

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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.