Home / 780,108.90-1,169,288.55-400,883.10

Finding the Fourth Proportional to 780,108.90, 1,169,288.55 and 400,883.10

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Solution

The fourth proportional to 780,108.90, 1,169,288.55 and 400,883.10 is: 600,875.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,108.90 : 1,169,288.55 = 400,883.10 : x
  2. Step 2: Convert to fraction form
    780,108.90/1,169,288.55 = 400,883.10/x
  3. Step 3: Cross multiply
    780,108.90x = 1,169,288.55 × 400,883.10
  4. Step 4: Simplify right side
    780,108.90x = 468,748,018,718.51
  5. Step 5: Solve for x
    x = 468,748,018,718.51/780,108.90
  6. Step 6: Final answer
    x = 600,875.11

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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.