Home / 879,437.25-1,213,623.81-497,455.83

Finding the Fourth Proportional to 879,437.25, 1,213,623.81 and 497,455.83

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Solution

The fourth proportional to 879,437.25, 1,213,623.81 and 497,455.83 is: 686,489.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,437.25 : 1,213,623.81 = 497,455.83 : x
  2. Step 2: Convert to fraction form
    879,437.25/1,213,623.81 = 497,455.83/x
  3. Step 3: Cross multiply
    879,437.25x = 1,213,623.81 × 497,455.83
  4. Step 4: Simplify right side
    879,437.25x = 603,724,239,711.31
  5. Step 5: Solve for x
    x = 603,724,239,711.31/879,437.25
  6. Step 6: Final answer
    x = 686,489.27

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1.5x scale

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.