Home / 759,721.32-1,047,389.48-487,316.34

Finding the Fourth Proportional to 759,721.32, 1,047,389.48 and 487,316.34

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Solution

The fourth proportional to 759,721.32, 1,047,389.48 and 487,316.34 is: 671,838.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,721.32 : 1,047,389.48 = 487,316.34 : x
  2. Step 2: Convert to fraction form
    759,721.32/1,047,389.48 = 487,316.34/x
  3. Step 3: Cross multiply
    759,721.32x = 1,047,389.48 × 487,316.34
  4. Step 4: Simplify right side
    759,721.32x = 510,410,007,948.10
  5. Step 5: Solve for x
    x = 510,410,007,948.10/759,721.32
  6. Step 6: Final answer
    x = 671,838.47

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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.