Home / 865,971.54-1,298,071.58-438,715.58

Finding the Fourth Proportional to 865,971.54, 1,298,071.58 and 438,715.58

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Solution

The fourth proportional to 865,971.54, 1,298,071.58 and 438,715.58 is: 657,624.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,971.54 : 1,298,071.58 = 438,715.58 : x
  2. Step 2: Convert to fraction form
    865,971.54/1,298,071.58 = 438,715.58/x
  3. Step 3: Cross multiply
    865,971.54x = 1,298,071.58 × 438,715.58
  4. Step 4: Simplify right side
    865,971.54x = 569,484,217,417.28
  5. Step 5: Solve for x
    x = 569,484,217,417.28/865,971.54
  6. Step 6: Final answer
    x = 657,624.63

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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.