Home / 814,214,876.80-1,220,859,632.40-555,742,969.60

Finding the Fourth Proportional to 814,214,876.80, 1,220,859,632.40 and 555,742,969.60

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Solution

The fourth proportional to 814,214,876.80, 1,220,859,632.40 and 555,742,969.60 is: 833,298,649.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,214,876.80 : 1,220,859,632.40 = 555,742,969.60 : x
  2. Step 2: Convert to fraction form
    814,214,876.80/1,220,859,632.40 = 555,742,969.60/x
  3. Step 3: Cross multiply
    814,214,876.80x = 1,220,859,632.40 × 555,742,969.60
  4. Step 4: Simplify right side
    814,214,876.80x = 678,484,157,574,740,480
  5. Step 5: Solve for x
    x = 678,484,157,574,740,480/814,214,876.80
  6. Step 6: Final answer
    x = 833,298,649.91

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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.