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Finding the Fourth Proportional to 1,312,269, 1,810,931.22 and 708,657

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Solution

The fourth proportional to 1,312,269, 1,810,931.22 and 708,657 is: 977,946.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,269 : 1,810,931.22 = 708,657 : x
  2. Step 2: Convert to fraction form
    1,312,269/1,810,931.22 = 708,657/x
  3. Step 3: Cross multiply
    1,312,269x = 1,810,931.22 × 708,657
  4. Step 4: Simplify right side
    1,312,269x = 1,283,329,085,571.54
  5. Step 5: Solve for x
    x = 1,283,329,085,571.54/1,312,269
  6. Step 6: Final answer
    x = 977,946.66

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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.