Home / 917,377.90-1,376,722.95-385,280.80

Finding the Fourth Proportional to 917,377.90, 1,376,722.95 and 385,280.80

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Solution

The fourth proportional to 917,377.90, 1,376,722.95 and 385,280.80 is: 578,196.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,377.90 : 1,376,722.95 = 385,280.80 : x
  2. Step 2: Convert to fraction form
    917,377.90/1,376,722.95 = 385,280.80/x
  3. Step 3: Cross multiply
    917,377.90x = 1,376,722.95 × 385,280.80
  4. Step 4: Simplify right side
    917,377.90x = 530,424,919,554.36
  5. Step 5: Solve for x
    x = 530,424,919,554.36/917,377.90
  6. Step 6: Final answer
    x = 578,196.75

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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.