Home / 1,389,428-1,917,410.64-785,803.04

Finding the Fourth Proportional to 1,389,428, 1,917,410.64 and 785,803.04

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Solution

The fourth proportional to 1,389,428, 1,917,410.64 and 785,803.04 is: 1,084,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,428 : 1,917,410.64 = 785,803.04 : x
  2. Step 2: Convert to fraction form
    1,389,428/1,917,410.64 = 785,803.04/x
  3. Step 3: Cross multiply
    1,389,428x = 1,917,410.64 × 785,803.04
  4. Step 4: Simplify right side
    1,389,428x = 1,506,707,109,840.35
  5. Step 5: Solve for x
    x = 1,506,707,109,840.35/1,389,428
  6. Step 6: Final answer
    x = 1,084,408.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.