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Finding the Fourth Proportional to 570,159.81, 786,779.33 and 315,515.25

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Solution

The fourth proportional to 570,159.81, 786,779.33 and 315,515.25 is: 435,388.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,159.81 : 786,779.33 = 315,515.25 : x
  2. Step 2: Convert to fraction form
    570,159.81/786,779.33 = 315,515.25/x
  3. Step 3: Cross multiply
    570,159.81x = 786,779.33 × 315,515.25
  4. Step 4: Simplify right side
    570,159.81x = 248,240,875,422.21
  5. Step 5: Solve for x
    x = 248,240,875,422.21/570,159.81
  6. Step 6: Final answer
    x = 435,388.24

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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.