Home / 1,118,951.80-1,678,427.70-489,095.80

Finding the Fourth Proportional to 1,118,951.80, 1,678,427.70 and 489,095.80

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Solution

The fourth proportional to 1,118,951.80, 1,678,427.70 and 489,095.80 is: 733,643.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,951.80 : 1,678,427.70 = 489,095.80 : x
  2. Step 2: Convert to fraction form
    1,118,951.80/1,678,427.70 = 489,095.80/x
  3. Step 3: Cross multiply
    1,118,951.80x = 1,678,427.70 × 489,095.80
  4. Step 4: Simplify right side
    1,118,951.80x = 820,911,938,673.66
  5. Step 5: Solve for x
    x = 820,911,938,673.66/1,118,951.80
  6. Step 6: Final answer
    x = 733,643.70

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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.