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Finding the Fourth Proportional to 1,685,740, 2,528,612.57 and 688,468

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Solution

The fourth proportional to 1,685,740, 2,528,612.57 and 688,468 is: 1,032,703.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685,740 : 2,528,612.57 = 688,468 : x
  2. Step 2: Convert to fraction form
    1,685,740/2,528,612.57 = 688,468/x
  3. Step 3: Cross multiply
    1,685,740x = 2,528,612.57 × 688,468
  4. Step 4: Simplify right side
    1,685,740x = 1,740,868,838,842.76
  5. Step 5: Solve for x
    x = 1,740,868,838,842.76/1,685,740
  6. Step 6: Final answer
    x = 1,032,703.05

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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.