Home / 1,430,929.36-1,974,642.72-786,349.36

Finding the Fourth Proportional to 1,430,929.36, 1,974,642.72 and 786,349.36

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Solution

The fourth proportional to 1,430,929.36, 1,974,642.72 and 786,349.36 is: 1,085,140.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430,929.36 : 1,974,642.72 = 786,349.36 : x
  2. Step 2: Convert to fraction form
    1,430,929.36/1,974,642.72 = 786,349.36/x
  3. Step 3: Cross multiply
    1,430,929.36x = 1,974,642.72 × 786,349.36
  4. Step 4: Simplify right side
    1,430,929.36x = 1,552,759,039,100.66
  5. Step 5: Solve for x
    x = 1,552,759,039,100.66/1,430,929.36
  6. Step 6: Final answer
    x = 1,085,140.25

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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.