Home / 478,972,274.40-718,458,411.60-306,785,390.40

Finding the Fourth Proportional to 478,972,274.40, 718,458,411.60 and 306,785,390.40

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Solution

The fourth proportional to 478,972,274.40, 718,458,411.60 and 306,785,390.40 is: 460,178,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,972,274.40 : 718,458,411.60 = 306,785,390.40 : x
  2. Step 2: Convert to fraction form
    478,972,274.40/718,458,411.60 = 306,785,390.40/x
  3. Step 3: Cross multiply
    478,972,274.40x = 718,458,411.60 × 306,785,390.40
  4. Step 4: Simplify right side
    478,972,274.40x = 220,412,544,288,869,888
  5. Step 5: Solve for x
    x = 220,412,544,288,869,888/478,972,274.40
  6. Step 6: Final answer
    x = 460,178,085.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.