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Finding the Fourth Proportional to 879,346, 1,213,497.56 and 497,364.56

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Solution

The fourth proportional to 879,346, 1,213,497.56 and 497,364.56 is: 686,363.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,346 : 1,213,497.56 = 497,364.56 : x
  2. Step 2: Convert to fraction form
    879,346/1,213,497.56 = 497,364.56/x
  3. Step 3: Cross multiply
    879,346x = 1,213,497.56 × 497,364.56
  4. Step 4: Simplify right side
    879,346x = 603,550,679,990.47
  5. Step 5: Solve for x
    x = 603,550,679,990.47/879,346
  6. Step 6: Final answer
    x = 686,363.14

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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.