Home / 570,136.32-786,795.12-315,511.20

Finding the Fourth Proportional to 570,136.32, 786,795.12 and 315,511.20

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Solution

The fourth proportional to 570,136.32, 786,795.12 and 315,511.20 is: 435,409.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,136.32 : 786,795.12 = 315,511.20 : x
  2. Step 2: Convert to fraction form
    570,136.32/786,795.12 = 315,511.20/x
  3. Step 3: Cross multiply
    570,136.32x = 786,795.12 × 315,511.20
  4. Step 4: Simplify right side
    570,136.32x = 248,242,672,465.34
  5. Step 5: Solve for x
    x = 248,242,672,465.34/570,136.32
  6. Step 6: Final answer
    x = 435,409.33

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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.