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Finding the Fourth Proportional to 1,312,544, 1,811,316.48 and 761,368.32

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Solution

The fourth proportional to 1,312,544, 1,811,316.48 and 761,368.32 is: 1,050,691.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,544 : 1,811,316.48 = 761,368.32 : x
  2. Step 2: Convert to fraction form
    1,312,544/1,811,316.48 = 761,368.32/x
  3. Step 3: Cross multiply
    1,312,544x = 1,811,316.48 × 761,368.32
  4. Step 4: Simplify right side
    1,312,544x = 1,379,078,985,365.91
  5. Step 5: Solve for x
    x = 1,379,078,985,365.91/1,312,544
  6. Step 6: Final answer
    x = 1,050,691.62

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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.