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Finding the Fourth Proportional to 1,375,955.65, 1,899,718.10 and 893,894.68

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Solution

The fourth proportional to 1,375,955.65, 1,899,718.10 and 893,894.68 is: 1,234,158.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,955.65 : 1,899,718.10 = 893,894.68 : x
  2. Step 2: Convert to fraction form
    1,375,955.65/1,899,718.10 = 893,894.68/x
  3. Step 3: Cross multiply
    1,375,955.65x = 1,899,718.10 × 893,894.68
  4. Step 4: Simplify right side
    1,375,955.65x = 1,698,147,903,089.71
  5. Step 5: Solve for x
    x = 1,698,147,903,089.71/1,375,955.65
  6. Step 6: Final answer
    x = 1,234,158.89

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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.