Home / 1,440,019.80-2,158,307.40-640,397.91

Finding the Fourth Proportional to 1,440,019.80, 2,158,307.40 and 640,397.91

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Solution

The fourth proportional to 1,440,019.80, 2,158,307.40 and 640,397.91 is: 959,830.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,019.80 : 2,158,307.40 = 640,397.91 : x
  2. Step 2: Convert to fraction form
    1,440,019.80/2,158,307.40 = 640,397.91/x
  3. Step 3: Cross multiply
    1,440,019.80x = 2,158,307.40 × 640,397.91
  4. Step 4: Simplify right side
    1,440,019.80x = 1,382,175,548,097.53
  5. Step 5: Solve for x
    x = 1,382,175,548,097.53/1,440,019.80
  6. Step 6: Final answer
    x = 959,830.93

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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.