Home / 813,775,448.45-1,219,127,123.48-480,788,875.50

Finding the Fourth Proportional to 813,775,448.45, 1,219,127,123.48 and 480,788,875.50

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Solution

The fourth proportional to 813,775,448.45, 1,219,127,123.48 and 480,788,875.50 is: 720,275,795.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,775,448.45 : 1,219,127,123.48 = 480,788,875.50 : x
  2. Step 2: Convert to fraction form
    813,775,448.45/1,219,127,123.48 = 480,788,875.50/x
  3. Step 3: Cross multiply
    813,775,448.45x = 1,219,127,123.48 × 480,788,875.50
  4. Step 4: Simplify right side
    813,775,448.45x = 586,142,758,787,094,912
  5. Step 5: Solve for x
    x = 586,142,758,787,094,912/813,775,448.45
  6. Step 6: Final answer
    x = 720,275,795.87

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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.