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Finding the Fourth Proportional to 684,368.04, 944,434.02 and 378,465

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Solution

The fourth proportional to 684,368.04, 944,434.02 and 378,465 is: 522,285.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,368.04 : 944,434.02 = 378,465 : x
  2. Step 2: Convert to fraction form
    684,368.04/944,434.02 = 378,465/x
  3. Step 3: Cross multiply
    684,368.04x = 944,434.02 × 378,465
  4. Step 4: Simplify right side
    684,368.04x = 357,435,221,379.30
  5. Step 5: Solve for x
    x = 357,435,221,379.30/684,368.04
  6. Step 6: Final answer
    x = 522,285.09

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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.