Home / 989,240.80-1,483,569.60-390,002.80

Finding the Fourth Proportional to 989,240.80, 1,483,569.60 and 390,002.80

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Solution

The fourth proportional to 989,240.80, 1,483,569.60 and 390,002.80 is: 584,889.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,240.80 : 1,483,569.60 = 390,002.80 : x
  2. Step 2: Convert to fraction form
    989,240.80/1,483,569.60 = 390,002.80/x
  3. Step 3: Cross multiply
    989,240.80x = 1,483,569.60 × 390,002.80
  4. Step 4: Simplify right side
    989,240.80x = 578,596,297,994.88
  5. Step 5: Solve for x
    x = 578,596,297,994.88/989,240.80
  6. Step 6: Final answer
    x = 584,889.24

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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.