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Finding the Fourth Proportional to 640,784.08, 884,300.70 and 350,412.76

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Solution

The fourth proportional to 640,784.08, 884,300.70 and 350,412.76 is: 483,579.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,784.08 : 884,300.70 = 350,412.76 : x
  2. Step 2: Convert to fraction form
    640,784.08/884,300.70 = 350,412.76/x
  3. Step 3: Cross multiply
    640,784.08x = 884,300.70 × 350,412.76
  4. Step 4: Simplify right side
    640,784.08x = 309,870,248,956.93
  5. Step 5: Solve for x
    x = 309,870,248,956.93/640,784.08
  6. Step 6: Final answer
    x = 483,579.82

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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.