Home / 931,688,686.80-1,396,346,145.30-495,198,478.80

Finding the Fourth Proportional to 931,688,686.80, 1,396,346,145.30 and 495,198,478.80

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Solution

The fourth proportional to 931,688,686.80, 1,396,346,145.30 and 495,198,478.80 is: 742,166,881.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,688,686.80 : 1,396,346,145.30 = 495,198,478.80 : x
  2. Step 2: Convert to fraction form
    931,688,686.80/1,396,346,145.30 = 495,198,478.80/x
  3. Step 3: Cross multiply
    931,688,686.80x = 1,396,346,145.30 × 495,198,478.80
  4. Step 4: Simplify right side
    931,688,686.80x = 691,468,487,030,803,712
  5. Step 5: Solve for x
    x = 691,468,487,030,803,712/931,688,686.80
  6. Step 6: Final answer
    x = 742,166,881.31

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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.