Home / 678,967.40-936,585.24-423,875.72

Finding the Fourth Proportional to 678,967.40, 936,585.24 and 423,875.72

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Solution

The fourth proportional to 678,967.40, 936,585.24 and 423,875.72 is: 584,705.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,967.40 : 936,585.24 = 423,875.72 : x
  2. Step 2: Convert to fraction form
    678,967.40/936,585.24 = 423,875.72/x
  3. Step 3: Cross multiply
    678,967.40x = 936,585.24 × 423,875.72
  4. Step 4: Simplify right side
    678,967.40x = 396,995,742,946.37
  5. Step 5: Solve for x
    x = 396,995,742,946.37/678,967.40
  6. Step 6: Final answer
    x = 584,705.16

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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.