Home / 726,772,420.80-1,090,300,348.80-312,248,440.80

Finding the Fourth Proportional to 726,772,420.80, 1,090,300,348.80 and 312,248,440.80

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Solution

The fourth proportional to 726,772,420.80, 1,090,300,348.80 and 312,248,440.80 is: 468,433,548.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,772,420.80 : 1,090,300,348.80 = 312,248,440.80 : x
  2. Step 2: Convert to fraction form
    726,772,420.80/1,090,300,348.80 = 312,248,440.80/x
  3. Step 3: Cross multiply
    726,772,420.80x = 1,090,300,348.80 × 312,248,440.80
  4. Step 4: Simplify right side
    726,772,420.80x = 340,444,583,916,496,128
  5. Step 5: Solve for x
    x = 340,444,583,916,496,128/726,772,420.80
  6. Step 6: Final answer
    x = 468,433,548.35

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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.