Home / 940,690.80-1,298,358.72-578,426.40

Finding the Fourth Proportional to 940,690.80, 1,298,358.72 and 578,426.40

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Solution

The fourth proportional to 940,690.80, 1,298,358.72 and 578,426.40 is: 798,354.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    940,690.80 : 1,298,358.72 = 578,426.40 : x
  2. Step 2: Convert to fraction form
    940,690.80/1,298,358.72 = 578,426.40/x
  3. Step 3: Cross multiply
    940,690.80x = 1,298,358.72 × 578,426.40
  4. Step 4: Simplify right side
    940,690.80x = 751,004,960,318.21
  5. Step 5: Solve for x
    x = 751,004,960,318.21/940,690.80
  6. Step 6: Final answer
    x = 798,354.74

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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.