Home / 645,259.56-890,569.65-373,477.32

Finding the Fourth Proportional to 645,259.56, 890,569.65 and 373,477.32

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Solution

The fourth proportional to 645,259.56, 890,569.65 and 373,477.32 is: 515,463.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,259.56 : 890,569.65 = 373,477.32 : x
  2. Step 2: Convert to fraction form
    645,259.56/890,569.65 = 373,477.32/x
  3. Step 3: Cross multiply
    645,259.56x = 890,569.65 × 373,477.32
  4. Step 4: Simplify right side
    645,259.56x = 332,607,566,155.34
  5. Step 5: Solve for x
    x = 332,607,566,155.34/645,259.56
  6. Step 6: Final answer
    x = 515,463.21

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Half scale
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Double scale
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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.