Home / 684,378.72-944,501.04-397,880.64

Finding the Fourth Proportional to 684,378.72, 944,501.04 and 397,880.64

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Solution

The fourth proportional to 684,378.72, 944,501.04 and 397,880.64 is: 549,109.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,378.72 : 944,501.04 = 397,880.64 : x
  2. Step 2: Convert to fraction form
    684,378.72/944,501.04 = 397,880.64/x
  3. Step 3: Cross multiply
    684,378.72x = 944,501.04 × 397,880.64
  4. Step 4: Simplify right side
    684,378.72x = 375,798,678,275.87
  5. Step 5: Solve for x
    x = 375,798,678,275.87/684,378.72
  6. Step 6: Final answer
    x = 549,109.24

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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.