Home / 841,100.47-1,160,678.30-478,490.40

Finding the Fourth Proportional to 841,100.47, 1,160,678.30 and 478,490.40

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Solution

The fourth proportional to 841,100.47, 1,160,678.30 and 478,490.40 is: 660,293.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,100.47 : 1,160,678.30 = 478,490.40 : x
  2. Step 2: Convert to fraction form
    841,100.47/1,160,678.30 = 478,490.40/x
  3. Step 3: Cross multiply
    841,100.47x = 1,160,678.30 × 478,490.40
  4. Step 4: Simplify right side
    841,100.47x = 555,373,421,645.87
  5. Step 5: Solve for x
    x = 555,373,421,645.87/841,100.47
  6. Step 6: Final answer
    x = 660,293.80

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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.