Home / 877,126.08-1,210,420.87-489,946.89

Finding the Fourth Proportional to 877,126.08, 1,210,420.87 and 489,946.89

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Solution

The fourth proportional to 877,126.08, 1,210,420.87 and 489,946.89 is: 676,119.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,126.08 : 1,210,420.87 = 489,946.89 : x
  2. Step 2: Convert to fraction form
    877,126.08/1,210,420.87 = 489,946.89/x
  3. Step 3: Cross multiply
    877,126.08x = 1,210,420.87 × 489,946.89
  4. Step 4: Simplify right side
    877,126.08x = 593,041,940,847.59
  5. Step 5: Solve for x
    x = 593,041,940,847.59/877,126.08
  6. Step 6: Final answer
    x = 676,119.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.