Home / 312,432,866.80-468,649,300.20-261,792,444.40

Finding the Fourth Proportional to 312,432,866.80, 468,649,300.20 and 261,792,444.40

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Solution

The fourth proportional to 312,432,866.80, 468,649,300.20 and 261,792,444.40 is: 392,688,666.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,432,866.80 : 468,649,300.20 = 261,792,444.40 : x
  2. Step 2: Convert to fraction form
    312,432,866.80/468,649,300.20 = 261,792,444.40/x
  3. Step 3: Cross multiply
    312,432,866.80x = 468,649,300.20 × 261,792,444.40
  4. Step 4: Simplify right side
    312,432,866.80x = 122,688,845,865,707,408
  5. Step 5: Solve for x
    x = 122,688,845,865,707,408/312,432,866.80
  6. Step 6: Final answer
    x = 392,688,666.60

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1.5x scale

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.