Home / 507,477,621.60-761,216,432.40-312,757,639.20

Finding the Fourth Proportional to 507,477,621.60, 761,216,432.40 and 312,757,639.20

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Solution

The fourth proportional to 507,477,621.60, 761,216,432.40 and 312,757,639.20 is: 469,136,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,477,621.60 : 761,216,432.40 = 312,757,639.20 : x
  2. Step 2: Convert to fraction form
    507,477,621.60/761,216,432.40 = 312,757,639.20/x
  3. Step 3: Cross multiply
    507,477,621.60x = 761,216,432.40 × 312,757,639.20
  4. Step 4: Simplify right side
    507,477,621.60x = 238,076,254,317,670,368
  5. Step 5: Solve for x
    x = 238,076,254,317,670,368/507,477,621.60
  6. Step 6: Final answer
    x = 469,136,458.80

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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.