Home / 1,319,140.32-1,820,416.80-715,528.32

Finding the Fourth Proportional to 1,319,140.32, 1,820,416.80 and 715,528.32

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Solution

The fourth proportional to 1,319,140.32, 1,820,416.80 and 715,528.32 is: 987,430.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,140.32 : 1,820,416.80 = 715,528.32 : x
  2. Step 2: Convert to fraction form
    1,319,140.32/1,820,416.80 = 715,528.32/x
  3. Step 3: Cross multiply
    1,319,140.32x = 1,820,416.80 × 715,528.32
  4. Step 4: Simplify right side
    1,319,140.32x = 1,302,559,774,603.78
  5. Step 5: Solve for x
    x = 1,302,559,774,603.78/1,319,140.32
  6. Step 6: Final answer
    x = 987,430.79

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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.