Home / 918,139.80-1,377,209.70-705,563.40

Finding the Fourth Proportional to 918,139.80, 1,377,209.70 and 705,563.40

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Solution

The fourth proportional to 918,139.80, 1,377,209.70 and 705,563.40 is: 1,058,345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,139.80 : 1,377,209.70 = 705,563.40 : x
  2. Step 2: Convert to fraction form
    918,139.80/1,377,209.70 = 705,563.40/x
  3. Step 3: Cross multiply
    918,139.80x = 1,377,209.70 × 705,563.40
  4. Step 4: Simplify right side
    918,139.80x = 971,708,758,444.98
  5. Step 5: Solve for x
    x = 971,708,758,444.98/918,139.80
  6. Step 6: Final answer
    x = 1,058,345.10

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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.