Home / 890,005.86-1,335,090.78-290,970.18

Finding the Fourth Proportional to 890,005.86, 1,335,090.78 and 290,970.18

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Solution

The fourth proportional to 890,005.86, 1,335,090.78 and 290,970.18 is: 436,482.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,005.86 : 1,335,090.78 = 290,970.18 : x
  2. Step 2: Convert to fraction form
    890,005.86/1,335,090.78 = 290,970.18/x
  3. Step 3: Cross multiply
    890,005.86x = 1,335,090.78 × 290,970.18
  4. Step 4: Simplify right side
    890,005.86x = 388,471,604,572.94
  5. Step 5: Solve for x
    x = 388,471,604,572.94/890,005.86
  6. Step 6: Final answer
    x = 436,482.08

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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.