Home / 1,868,430-2,578,853.40-1,223,475.60

Finding the Fourth Proportional to 1,868,430, 2,578,853.40 and 1,223,475.60

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Solution

The fourth proportional to 1,868,430, 2,578,853.40 and 1,223,475.60 is: 1,688,671.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868,430 : 2,578,853.40 = 1,223,475.60 : x
  2. Step 2: Convert to fraction form
    1,868,430/2,578,853.40 = 1,223,475.60/x
  3. Step 3: Cross multiply
    1,868,430x = 2,578,853.40 × 1,223,475.60
  4. Step 4: Simplify right side
    1,868,430x = 3,155,164,210,877.04
  5. Step 5: Solve for x
    x = 3,155,164,210,877.04/1,868,430
  6. Step 6: Final answer
    x = 1,688,671.35

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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.