Home / 405,231.16-607,303.40-315,382.36

Finding the Fourth Proportional to 405,231.16, 607,303.40 and 315,382.36

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Solution

The fourth proportional to 405,231.16, 607,303.40 and 315,382.36 is: 472,650.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,231.16 : 607,303.40 = 315,382.36 : x
  2. Step 2: Convert to fraction form
    405,231.16/607,303.40 = 315,382.36/x
  3. Step 3: Cross multiply
    405,231.16x = 607,303.40 × 315,382.36
  4. Step 4: Simplify right side
    405,231.16x = 191,532,779,528.02
  5. Step 5: Solve for x
    x = 191,532,779,528.02/405,231.16
  6. Step 6: Final answer
    x = 472,650.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.